Question: What is at the extreme point deepest of Guatemala, whose tributary is Riviere de Cavaillon?
Paraphrase: What is at the extraordinary point most profound of Guatemala, whose tributary is Riviere de Cavaillon?
SPARQL (Wikidata): SELECT ?answer WHERE { wd:Q774 wdt:P1589 ?answer . ?answer wdt:P974 wd:Q7338932}
Answer: Caribbean Sea